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atom/script/compile-coffee
Adam Roben 83ee2d23b3 Use gyp's rules functionality to compile .coffee/.cson files
Instead of finding and compiling all .coffee/.cson files in
script/copy-files-to-bundle, we now tell gyp how to do this for us. It
works like this:

1. Rakefile invokes the new script/generate-sources-gypi script to
   generate sources.gypi. This file lists all the .coffee/.cson files in
   the src, static, and vendor directories, as well as a new
   compiled_sources_dir variable that specifies where the compiled
   versions of the files should be placed.
2. atom.gyp includes sources.gypi.
3. atom.gyp has a new target, generated_sources, which contains all the
   .coffee/.cson files, and uses two rules to tell gyp how to compile
   them. The rules invoke the new script/compile-coffee and
   script/compile-cson files once for each file.
4. gyp generates one Makefile for each rule to actually perform the
   compilation.
5. script/copy-files-to-bundle now takes the compiled_sources_dir
   variable as an argument, and copies files both from there and from
   the repository into the Resources directory.

By putting the compilation into a different target, we can do it in
parallel with compiling/linking our binaries. And gyp automatically runs
make using -j$(sysctl -n hw.ncpu), so compilation of .coffee/.cson files
happens in parallel, too.

These changes reduce clean build time on my MacBook Pro from 55 seconds
to 46 seconds.
2013-03-04 11:32:06 -05:00

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#!/bin/sh
set -e
# Because of the way xcodebuild invokes external scripts we need to load
# The Setup's environment ourselves. If this isn't done, things like the
# node shim won't be able to find the stuff they need.
if [ -e /opt/github/env.sh ]; then
source /opt/github/env.sh
fi
INPUT_FILE="${1}"
OUTPUT_FILE="${2}"
node_modules/.bin/coffee -c -p "${INPUT_FILE}" > "${OUTPUT_FILE}"